Is your suggestion related to a problem? Please describe.
#linuxgaming:maunium.net is named "general"
#opensuse:matrix.org is named "general"

So they aren't found we searching for "linux", "gaming" or "suse"

Describe the solution you'd like
The search should also include the room id, or the description.

Describe alternatives you've considered
Maybe the rooms should always be prefixed by their general topic. (not sure requesting will work enough to make the issue non-relevant) I don't know what's better.

Additional context
The search for adding a new room on the other hand searches in the room ID and the description.

Note that it searches in the full room id so it's possible to search for "matrix" to find room related to the project. Should I open an issue about this?